All videos showing black screen with ONLY audio. Pls Help!

I have read that 4.2b (beta) had this problem.

I have the same exact problem for a couples days, it doesn't matter if is over WIFI or 3G.
Can't play any video on YouTube app, iPod app, video app, photo app, safari app or any third party browser app. It only shows the 1st frame or a black screen while audio still progress.

Tried the soft and hard reset many times with no avail.

Probably while updating some app, it has corrupt some preferences setting because prior that, all the video were working fine. It is like all the video has being redefined as an audio only.

Still on 3.2.
Didn't upgrade to ios4 because I don't need multitasking.

A system Reset cures many ills and takes but a minute to perform:
Hold down the on/off switch and the Home button simultaneously until you see the Apple logo. Ignore the "Slide to power off" text if it appears.

A Reset does NOT delete apps, photos, movies, music or any other data. A Reset does NOT delete any settings for email, network access, etc.

Also, you might wish to download the 4.2 User Guide. Pay special attention to page 170.
http://support.apple.com/manuals/#ipad

iPad64_3G wrote:
Still on 3.2.

That could possibly be the cause of your problem.